<!DOCTYPE html>
<head>
<!-- Tests that box-shadow inset works. -->
<style>
section {
    position: absolute;
    width: 100px;
    height: 100px;
    top: 100px;
    left: 100px;
    background: gold;
}
nav {
    display: block;
    position: absolute;
    width: 50px;
    height: 90px;
    background: white;
    left: 50px;
    top: 10px;
}
</style>
</head>
<body>
<section><nav></nav></section>
</body>


